(R)-(+)-4-hexylbutan-4-olide
- strong, fatty-sweet fruity note, some reminiscence to
coconut, caramel (Mosandl & Gunther, Evaluated as a 1%
solution on blotter strips); Bourdineaud et. al. describe
this as: Fatty, animalic top note. Upon evaporation clearly
different from the racemate with regard to the acidic and
animalic base notes; In particular suitable for
flavours.

34 ppb in red wine

(S)-(-)-4-hexylbutan-4-olide
- soft, sweet coconut note with fruity-fatty aspects
(Mosandl & Gunther, Evaluated as a 1% solution on
blotter strips); Bourdineaud et. al. describe this as:
Fruity, banana like, lactonic and jasmonic like floral top
note. Base note is closest to that of the racemate with more
volume, less sweet and floral, but heavier and more
lactonic.

(3S,4S)-(-)-3-Methyl-4-decanolide
- Top note has a strong matured fruity smell. Middle note
has a waxy and milky scent. The overall tonality is a good
long lasting aroma with a strong matured fruity and a little
bit of milky scent.

NA

(3R,4R)-(+)-3-Methyl-4-decanolide
- Top note has lactone notes with a little bit of a fatty
smell. Middle note has lactone notes along with a little
stimulant green scent. The overall tonality is a good long
lasting aroma with lactone-like, greeny smell.

(S)-(-)-5-pentylpentan-5-olide
- sweet, fruity, peach note, fatty, butter-like;
Bourdineaud et. al. describe this as: Fruity top note;
heavier, milder and more coumarin but less tuberose than
racemate. The more the sample is enriched in the
R-(+)-enantiomer the more the floral notes are important;
inversely, the more enriched in the S-(-)-enantiomer, the
more the sample is intense and lactonic.

NA

(R)-(-)-delta-Jasmolactone
- Exhibits a floral coconut note which is fresher and more
rising than in the S-(+)-enantiomer; the fruity note is more
marked than that of the racemate. Base' note is coconut
without the fatty aspect.

NA

(S)-(+)-delta-Jasmolactone
- Exhibits a heavy woody coconut note with the spicy
celery-jasmone aspect of the racemate; the base note is
creamy tuberose like.

NA

(R)-(-)-massoialactone -
Heavy tonka like top note and less fruity than
(S)-(+)-enantiomer. Base note is strongly coconut like with
fatty aspects. This enantiomer exhibits a more pleasant
character with more volume than the racemate.

NA

(S)-(+)-massoialactone -
Fatty fruity (a bit tuberose like) top note, which is more
intense than that of the (R)-(-)-enantiomer. upon
evaporation the fatty aspects disappear in favor of a milky,
coconut, tonka and a strong coumarin note.

NA

(R)-(-)-Tuberolactone -
Fruity, coconut, tonka note with metallic and slightly fatty
aspects. Base note, which is essentially tuberose lactonic,
has less volume than (S)-(+)-enantiomer. In comparison to
the racemate this enantiomer is more pleasant with regard to
the tuberose note, but has less volume.

NA

(S)-(+)-Tuberolactone -
Heavy fatty and less fruity top note. Upon evaporation
becomes clearly lactonic, tuberose and tonka. In general
much more volume than the (R)-(-)-enantiomer. Less pleasant
general floral note, but more voluminous than the
racemate.

(4S,5S)-(+)-cis-4-methyl-5-decanolideor (4S,5S)-(-)-cis-Aerangis lactone -reminiscent of certain aspects of the smell of the
flower of the tuberose (Polianthes tuberosa) and gardenia
varieties and on the other hand is reminiscent of caramel,
condensed milk and coconut, especially coconut milk

0.13 ng

(4R,5R)-(+)-cis-4-methyl-5-decanolide
or (4R,5R)-(+)-cis-Aerangis lactone - reminiscent of
delta-decalactone and coconut, and with a fragrance
intensity much lower than the (4S,5S)-isomer

30 ng

(4S,5R)-trans-4-methyl-5-decanolide
or(4S,5R)-trans-aerangis lactone -
reminiscent of delta-decalactone and cocos, with similar
intensity to the cis-(4R,5R)-enantiomer and higher than the
trans-(4R,5S)-enantiomer

(+)-(3S,3aS,6R,7aR)-perhydro-3,6-dimethyl-2-benzo[b]furanone
- tonka, beans, hay, flouve type characters are best
represented whose coumarinic character is more marked in the
bottom note than in the top note, and is accompanied of a
metallic side(Gaudin); also
described as coconut like by GC-O (Katja Buhr)

(+)-(3aS,6R,7aR)-perhydro-6-methyl-3-methylene-2-benzo[b]furanone
- coumarinic, lactonic, tonka, daffodil, very powerful.;
perhydro-6-methyl-3-methylene-2-benzo[b]furanone
possesses a very powerful odor of the coumarinic, fat,
lactonic type, with a balsamic bottom note reminiscent of
the odor of daffodil. This is an odor note which is very
close to that of coumarin and which is best represented in
(+)-(3aS,6R,7aR)-perhydro-6-methyl-3-methylene-2-benzo[b
]furanone, a preferred compound of the invention

(R)-cis-6-gamma-dodecenolactone
- flowery, fruity, coconut-, peach- and apricot-like. The
odor of the (R)-enanantiomer was described as being
significantly weaker than the (S)-enantiomer, although no
sensory differences in odor quality were noted.

12.2 pg (in air)

(S)-cis-6-gamma-dodecenolactone
- flowery, fruity, coconut-, peach- and apricot-like. The
odor of the (S)-enanantiomer was described as being
significantly stronger than the (R)-enantiomer, although no
sensory differences in odor quality were noted.

(-)-(R)-Sotolone - walnut,
rancid. Although the aromatic nuances of both enantiomers
were quite similar, the perception threshold of (S)-sotolon
in dilute alcohol solution (12% vol) was >100 times lower
than that of (R)-sotolon.